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GCSE Biology > General Biology > Flashcards

General Biology Flashcards

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1
Q

DIFFUSION

A

TH MOVEMENT OF PARTICLES FROM AN AREA OF HIGH CONCENTRATION TO LOW

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2
Q

OSMOSIS

A

THE MOVEMENT OF WATER THROUGH A PARTIALLY PERMEABLE MEMBRANE FROM AN EREA OF HIGH WATER POTENTIAL TO LOW.

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3
Q

ACTIVE TRANSPORT

A

THE MOVEMENT OF PARTICLES AGAINST A CONCENTRATION GRADIENT USING ENERGY RELEASED BY RESPIRATION

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4
Q

POLLINATION

A

THE TRANSFER OF POLLEN FROM ANTHER TO STIGMA

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5
Q

TO GERMINATE, SEEDS NEED 3 THINGS:

A

WARMTH
WATER
OXYGEN

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6
Q

TEST FOR GLUCOSE

A

-ADD BENDICT’S SOLUTION
-HEAT IN WATER BATH
BLUE—–> RED (IF GLUCOSE PRESENT)

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7
Q

TEST FOR STARCH

A

-DIP IN BOILING WATER -(denature enzymes, kill leaf)
-PUT IN BOILING ETHANOL-(removes chlorophyll)
-PUT IN WATER-(softens leaf)
ADD IODINE - GOES BLUE/BLACK

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8
Q

TEST FOR PROTEINS

A

-ADD BIURET SOLUTION

PALE BLUE———-> PURPLE (IF PROTEINS PRESENT)

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9
Q

TEST FOR LIPIDS

A
  • ADD ETHANOL
  • SHAKE
  • POUR SOLUTION INTO TEST TUBE OF WATER
  • —-> CLOUDY WHITE EMULSION FORMED IF LIPIDS PRESNT
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10
Q

BIOLOGICAL MOLECULES- IN CARBOHYDRATES (EG GLUCOSE, GLUCOGEN, STARCH)

A

CHO

CARBON, HYDROGEN, OXYGEN

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11
Q

BIOLOGICAL MOLECULES- IN PROTEINS

A

CHON

CARBON, HYDROGEN, OXYGEN, NITROGEN

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12
Q

BIOLOGICAL MOLECULES- IN LIPIDS (FATS AND OILS)

A

CHO

CARBON, HYDROGEN, OXYGEN

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13
Q

STARCH - SMALLER BASIC UNITS =

A

SIMPLE SUGARS

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14
Q

PROTEIN- SMALLER BASIC UNITS=

A

AMINO ACIDS

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15
Q

LIPIDS- SMALLER BASIC UNITS=

A

FATTY ACIDS AND GLYCEROL

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16
Q

GLYCOGEN- SMALLER BASIC UNITS=

A

SIMPLE SUGARS

17
Q

WHAT IS A CATALYST?

A

SOMETHING THAT SPEEDS UP THE RATE OF A REACTION

18
Q

FACTORS AFFECTING THE RATE OF MOVEMENT OF SUBSTANCES INTO& OUT OF CELLS MAKING IT FASTER

A
  • LARGER SURFACE AREA
  • HIGHER TEMPERATURE
  • GREATER CONCENTRATION GRADIENT
  • SHORTER DISTANCE

GCSE Biology (5 decks)

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